Socket and shell cap fastening



Sepu 25, i923. AQE? v. R. DESPARD SOCKET AND SHELL CAP FASTENING VFilm1 July 21, 1917 2 Sheets-sheet 1 sept. 25, w23. M6950@ V.R.DE$PARD SOCKET AND SHELL' CAP FASTENING Filed July 21. 1917 2 sneets-shee 2 Potent@ Sept. 25, 1923..

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VICTOR E. DESPABD, F HINSDALE, ILLINOIS, ASSIGNOB., BY MESNE ASSIGNMENTS;

T0 MOGILL MANUFACTURING COMPANY, 0F

TION 0F INDIANA.

VALPARAISO, INDIANA, A CORPORA- SOCKE'I AND SHELL CAP FASTENING.

Application led July 21, 1917. Serial No. 182,062.

To all whom t may concern.:

Be it known that I, VICTOR R. DESPARD, a citizen of the United States, residin at Hinsdale, in the county of Du Page and tate of Illinois, have invented a certain new and useful Improvement in Socket and Shell Cap Fastenings, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying lo drawings, forming a part of this speci- Y iication.

My invention relates to socket and shell cap fasteners, more particularly of use in connection with electrical devices. In one lo `forno. of my invention which is the one chosen for illustration herein, my improved socket and shell cap fastener is of articular utility in connection with electrlc sockets which may for instance be of the customary 2o Edison screw base t In this particular ormi of the invention there is rovided a cover wp and what may be calledp a shell part, the two parts together forming the outside enclosure for thecurrent carrying partsl or movement wlthin.

My invention contemplates the provision of means for readily causing the engagement of the shell and cap when the two parts are pressed together into their operative form, 3o and further contemplates the provision of means whereby the shell and ca may be readily separated should it be esired to have access to the interior parts enclosed thereby. The enga 'ng means between the se shell and cap are oiguch a nature that the revent when in operative condition bot o `tudinal separation between the parts anndglrotative movement between the parts. i means `are of such a character The e a e@ that th stililI and cap may be brought into locked operativefposltion in any one of .a plurality of di'erent relative angular posi;- tions.

I will lexplain my inventon more in detail e5 by referring to the accompnying drawings w 'chillustrating the same, in

Fig. 1 is a side view of a socket structure constructed in accordance with my invention, portions being broken away more a clearly to reveal features of construction;

Fig. 2A is a side view of the cgp; Fig. 3 is a side view of the ell; Fig. 4 isatop view of the shell;

into the c perspective view of a locking 11 which may be locked together-in any one of a plurality of relatively different angular positions. 'Ihe cap has a rounded bead 12 wh1ch, when the cap and shellv are together, encircles the bead 13 provided upon the shell. The shell is slotted as shown at 14 so that the shell may be collapsed when it is being inserted in the cap. 'Ihe shell is also providedkwith a lookin element 15 having the tongue 16. 'Ihis loc 'ng element is preferably riveted to the shell as-shown at-17. A locking element 15 also carries a finger piece 18 which projects outwardly of the shell through a hole 19 rovided therefor. The spring action of this locking element 15 keeps the tongue y16 between the opposite edges 20 and 21 at the extremity of the slot 14. f

When it is desiredA to insert the shell linto the cap the finger piece 18 is pressed inwardly to withdraw the tongue 16 from between the faces 2O and 2'1, thus to permit collapse of the shell as it is bein inserted ap. After the shell isp aced into the ca t e pressure against the linger piece 1 is withdrawn so that the tongue 16 resumes its normal osition, thus preventing a collapse of the s ell. Thus the bead 12 by encircling the bead 13 holds the shell in position within the cap. In order to prevent rotational movement relatively between the cap 10'and the shell 11, a portion of each is made octagonal having the faces 22, on the cap portion and the faces 23 on the shell portion. These faces 22 and 23 interlock when the shell is in place within the cap. Thus relative rotational movement between the cap and shell is prevented.

From this it will be understood that the shell may be inserted in any one of eight cap. The object of providing means whereby the shell and cap may be locked together in a plurality of different angular positions is due to the necessity of accommodating for the actuating finger piece or lever by means of which the movement in the interior of the shell is actuated to control the connections. The shell must be provided with a slot 24 to accommodate. for the finger piece, this finger piece 25 being shown substantially as of the typeillustrated in my co-pending applica# tion Serial No. 140,248, filed Jan. 2, 1917. Means must therefore likewise be provided to prevent a collapse of the shell 11 due to the slot 24, and these means are preferably provided upon the porcelain base 26, which carries the movement or current conducting parts within the shell. This porcelain base 26 has a projection 27 preferably directly above the finger piece 25 so as not to interfere therewith. This projection 27 passes between the opposite faces of the slot 24`to prevent collapse of the shell.

Normally, in mounting sockets of this nature in position the cap lmay first be secured to some supporting structure, whereupon the lead in wires 28 and 29 are mounted in place upon the porcelain base 26 preferably through the' agency of screws 30 and 31. After this is done the shell must be mounted in position. ln order todo this the linger piece 18 is actuated to press the tongue 16 inwardly, thus permitting the shell to collapse as the bead 13 passes' through the lowerrestricted mouth 32 of the cap. At ther same time, however, the projection 27 passes between the opposite end faces of the slot 24 and prevents collapse at that point.

The collapse of the shell may then prefer-k ably take place at the slot 14. As soon as the bead 13 has slipped into position within the bead' 12, the finger piece 18 is released and thetongue 16 moves into position to lock the shell and cap together as the shell can no longer collapse and the beads 12 and 13 prevent endwise separation. Likewise, the interlocking nature of the faces 22 and 23 preventsrotational movement. The porcelain base 26 is likewse provided with a cutaway portion 33 to accommodate the locking element 15 with its tongue 16' when it is pressed inwardly. An insulating cylinder 34 of the customary type may be provided as shown more clearly in Fig. 8.

In Figs. 5 and' 7 li show a modified form of the device in which li combine the Octagonal structure of the faces22 or 23 with the beads 12 or 13 so that the ca 10 h'as an Ooctagonal beaded lower extremity 22a and resaca? beaded nature of the faces 22- and 23a prevents endwise separation and the octagonal nature of these faces prevents relative rotational movement. lin either event the shell and'cap may be secured together in eight dierent angular positions relatively to each other.

From what has been thus described the nature of m invention will be readily clear to those Skil ed in the art.`

Having thus described means for carrying out my invention, what lt claim as new and desire to secure by Letters Patent is:

1. In a structure of the character described the combination with two separable parts adapted whenunited to form an enclosure, one of'said parts being collapsible, of cam faced inter-engaging means on said parts adapted to be placed in engagement when one of said parts in collapsed condition is inserted in the other part, actuable means carried by one of said parts to normally prevent collapse of the collapsible part when the two parts are in their engaged condition, said collapsible part having a slot, an insulating base within said parts, and means carried by said base to prevent collapse of saidcollapsible partat said slot.

2. lin a structure of the character described the combination with two separable parts adapted when united to form an enclosure one of said parts being collapsible, of cam-faced inter-engagindg means on said parts adapted to be place in engagement when one of said parts in collapsed condition is inserted in the other part, actuable means carried by one of said parts to normally prevent collapse of the collapsible part when the two parts are in thelr engaged condition, said inter-engaging means bemg adapted to oper-atively engage in .any one of a plurality of diderent angular positions, said collapsible art having a Slot, an insulating base witlfin said parts, and means carried by said base to prevent col- 11o lapse of said collapsible part at said slot.

3. In a structure of the charcter described the combination with two separable parts adapted when united to form an enclosure, one of saidparts being collapsible of interengaging cam faced beads on said parts, adapted to be placed 'in engagement when one of said arts in collapsed condition is inserted in the other part, actuable means carried by one of said parts to normally R20 prevent collapse of the collapsible part when the two parts ane in their engaged condition, said cellapsibley art having a slot, an insulatin base within said parts, and means carrie by said base to prevent collapse of said collapsible part at said slot. 4. n a structure of the character described the combination with two separable parts adapted when united to form an enclosure, one of said parte being coli lapsible, of inter-engaging cam faced i :i Y: on said parts adapted to be placed in enagement when one of said parts in colapsed. condition is inserted 1n the other part, 'actuablemeans carried by one of said parts to normally prevent collapse of the collapsible part when the two parts are in their en aged condition, said miser-engaging bea s having coo erating faces for ho ding said parts against rotation in any one of a lurality of different angular ositions, sald collapsible part having a s ot, an insulating base within said parts, and means carried by said base to prevent collapse of said collapsible part at said slot.

5. ln a structure o the character described the combination with two separable parts adapted when united to from an enclosure, one of said parts being collapsible, of inter-engaging means on said parte adapted to be placed in engagement when one of said parts in collapsed condition is inserted in the other part, actuable means to normally prevent collapse of the collapsible part when the two parts are in their engaged condition, said collapsible part having a slot, an insulatin base within said parts, and means carri by said base to prevent collapse of said collapsible part at said slot.

6. A device of the character described comprising a cap having a circumerenshell, an

dering the last said means inoperative so as to permit a separation of the parts by collapse of the shell. X

7. A device of the character described comprising a cap, a slotted compressible shell for telescopic insertion into and withdrawal from the cap, said cap and shell having circferentlal co-operating cam shaped llocking surfaces interengaging when the shell is in the cap but 1rmitting said shell to be inserted and withawn from the cap by direct telescopic thrust and pull respectively, and manually operable means for preventing collapse of the shell whereby said locking surfaces normally prevent separation of the parts but whereby said manual'means may be operated to .permit collapse of the shell by a direct pull and separation of the parts. l

In Witness whereof I hereunto subscribe y my name this 13th day of July, A. D. 1917,

vieron n. nnsram). 

